On the motor speed when the frequency of the inverter exceeds the rated frequency of the motor - News - Global IC Trade Starts Here.

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The usual motor is designed and manufactured according to the rated frequency voltage, and its rated torque is also given within this voltage range. Therefore, the speed regulation below the rated frequency is called constant torque speed regulation. (T=Te, P<=Pe)
î ‹î ‹ When the output frequency of the inverter is greater than the rated frequency (if the motor in China is greater than 50 Hz), the torque generated by the motor should decrease in a linear relationship inversely proportional to the frequency.
î ‹î ‹ When the motor is running at a speed greater than 20% of the rated frequency, the size of the motor load must be considered to prevent the motor from outputting insufficient torque.
For example, a motor with a rated frequency of 50 Hz produces a torque of approximately 1/2 of the torque generated at 100 Hz when reduced to 50 Hz. Therefore, the speed regulation above the rated frequency is called constant power speed regulation. (P=Ue*Ie)
When the frequency of the inverter exceeds the rated frequency of the motor, the speed of the motor will increase with the increase of the frequency, but the torque of the motor will decrease. If the parameters of the inverter follow the motor The parameter parameters are set correctly. Except for the torque of the motor, the performance of other motors does not change much.